Chemistry Problem. Please go through the steps.

Chemistry
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When HNO2 is dissolved in water it partially dissociates according to the equation HNO2 (RIGHT HERE SHOULD BE AN EQUILIBRIUM ARROW WITH THE TOP ARROW FACING TO THE LEFT AND THE BOTTOM ARROW FACING TOWARD THE RIGHT) H- + NO2-. A solution is prepared that contains 7.050 g of HNO2 in 1.000 kg of water. Its freezing point is 20.2929 °C. Calculate the fraction of HNO2 that has dissociated.

Oct 3rd, 2015

Thank you for the opportunity to help you with your question!

concentration of the water = 1000/18 per 1.00705 kg

concentration = 5.556 m/1.00705 = 55.16M

CHANGE IN T = x * Kf * m

20.2929 = x * 1.86C/m * 55.17

x= 0.195

FRACTION OF HNO2 THAT DISSOCIATED =195/1000 = 39/200 

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Sep 15th, 2015
Sep 15th, 2015

This is just clearer in case it changes anything.

Sep 15th, 2015

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Oct 3rd, 2015
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Oct 3rd, 2015
Dec 7th, 2016
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